tegra_soctherm.c revision 308335
1/*- 2 * Copyright (c) 2016 Michal Meloun <mmel@FreeBSD.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h> 28__FBSDID("$FreeBSD: stable/11/sys/arm/nvidia/tegra_soctherm.c 308335 2016-11-05 10:56:32Z mmel $"); 29 30/* 31 * Thermometer and thermal zones driver for Tegra SoCs. 32 * Calibration data and algo are taken from Linux, because this part of SoC 33 * is undocumented in TRM. 34 */ 35 36#include <sys/param.h> 37#include <sys/systm.h> 38#include <sys/bus.h> 39#include <sys/gpio.h> 40#include <sys/kernel.h> 41#include <sys/module.h> 42#include <sys/malloc.h> 43#include <sys/rman.h> 44#include <sys/sysctl.h> 45 46#include <machine/bus.h> 47 48#include <dev/extres/clk/clk.h> 49#include <dev/extres/hwreset/hwreset.h> 50#include <dev/ofw/ofw_bus.h> 51#include <dev/ofw/ofw_bus_subr.h> 52 53#include <arm/nvidia/tegra_efuse.h> 54#include <gnu/dts/include/dt-bindings/thermal/tegra124-soctherm.h> 55#include "tegra_soctherm_if.h" 56 57/* Per sensors registers - base is 0x0c0*/ 58#define TSENSOR_CONFIG0 0x000 59#define TSENSOR_CONFIG0_TALL(x) (((x) & 0xFFFFF) << 8) 60#define TSENSOR_CONFIG0_STATUS_CLR (1 << 5) 61#define TSENSOR_CONFIG0_TCALC_OVERFLOW (1 << 4) 62#define TSENSOR_CONFIG0_OVERFLOW (1 << 3) 63#define TSENSOR_CONFIG0_CPTR_OVERFLOW (1 << 2) 64#define TSENSOR_CONFIG0_RO_SEL (1 << 1) 65#define TSENSOR_CONFIG0_STOP (1 << 0) 66 67#define TSENSOR_CONFIG1 0x004 68#define TSENSOR_CONFIG1_TEMP_ENABLE (1U << 31) 69#define TSENSOR_CONFIG1_TEN_COUNT(x) (((x) & 0x3F) << 24) 70#define TSENSOR_CONFIG1_TIDDQ_EN(x) (((x) & 0x3F) << 15) 71#define TSENSOR_CONFIG1_TSAMPLE(x) (((x) & 0x3FF) << 0) 72 73#define TSENSOR_CONFIG2 0x008 74#define TSENSOR_CONFIG2_THERMA(x) (((x) & 0xFFFF) << 16) 75#define TSENSOR_CONFIG2_THERMB(x) (((x) & 0xFFFF) << 0) 76 77#define TSENSOR_STATUS0 0x00c 78#define TSENSOR_STATUS0_CAPTURE_VALID (1U << 31) 79#define TSENSOR_STATUS0_CAPTURE(x) (((x) >> 0) & 0xffff) 80 81#define TSENSOR_STATUS1 0x010 82#define TSENSOR_STATUS1_TEMP_VALID (1U << 31) 83#define TSENSOR_STATUS1_TEMP(x) (((x) >> 0) & 0xffff) 84 85#define TSENSOR_STATUS2 0x014 86#define TSENSOR_STATUS2_TEMP_MAX(x) (((x) >> 16) & 0xffff) 87#define TSENSOR_STATUS2_TEMP_MIN(x) (((x) >> 0) & 0xffff) 88 89/* Global registers */ 90#define TSENSOR_PDIV 0x1c0 91#define TSENSOR_PDIV_T124 0x8888 92#define TSENSOR_HOTSPOT_OFF 0x1c4 93#define TSENSOR_HOTSPOT_OFF_T124 0x00060600 94#define TSENSOR_TEMP1 0x1c8 95#define TSENSOR_TEMP2 0x1cc 96 97/* Readbacks */ 98#define READBACK_VALUE_MASK 0xff00 99#define READBACK_VALUE_SHIFT 8 100#define READBACK_ADD_HALF (1 << 7) 101#define READBACK_NEGATE (1 << 0) 102 103 104/* Fuses */ 105#define FUSE_TSENSOR_CALIB_CP_TS_BASE_SHIFT 0 106#define FUSE_TSENSOR_CALIB_CP_TS_BASE_BITS 13 107#define FUSE_TSENSOR_CALIB_FT_TS_BASE_SHIFT 13 108#define FUSE_TSENSOR_CALIB_FT_TS_BASE_BITS 13 109 110#define FUSE_TSENSOR8_CALIB 0x180 111#define FUSE_TSENSOR8_CALIB_CP_TS_BASE(x) (((x) >> 0) & 0x3ff) 112#define FUSE_TSENSOR8_CALIB_FT_TS_BASE(x) (((x) >> 10) & 0x7ff) 113 114#define FUSE_SPARE_REALIGNMENT_REG 0x1fc 115#define FUSE_SPARE_REALIGNMENT_REG_SHIFT_CP_SHIFT 0 116#define FUSE_SPARE_REALIGNMENT_REG_SHIFT_CP_BITS 6 117#define FUSE_SPARE_REALIGNMENT_REG_SHIFT_FT_SHIFT 21 118#define FUSE_SPARE_REALIGNMENT_REG_SHIFT_FT_BITS 5 119#define FUSE_SPARE_REALIGNMENT_REG_SHIFT_CP(x) (((x) >> 0) & 0x3f) 120#define FUSE_SPARE_REALIGNMENT_REG_SHIFT_FT(x) (((x) >> 21) & 0x1f) 121 122 123#define NOMINAL_CALIB_FT_T124 105 124#define NOMINAL_CALIB_CP_T124 25 125 126#define WR4(_sc, _r, _v) bus_write_4((_sc)->mem_res, (_r), (_v)) 127#define RD4(_sc, _r) bus_read_4((_sc)->mem_res, (_r)) 128 129static struct sysctl_ctx_list soctherm_sysctl_ctx; 130 131struct soctherm_shared_cal { 132 uint32_t base_cp; 133 uint32_t base_ft; 134 int32_t actual_temp_cp; 135 int32_t actual_temp_ft; 136}; 137struct tsensor_cfg { 138 uint32_t tall; 139 uint32_t tsample; 140 uint32_t tiddq_en; 141 uint32_t ten_count; 142 uint32_t pdiv; 143 uint32_t tsample_ate; 144 uint32_t pdiv_ate; 145}; 146 147struct tsensor { 148 char *name; 149 int id; 150 struct tsensor_cfg *cfg; 151 bus_addr_t sensor_base; 152 bus_addr_t calib_fuse; 153 int fuse_corr_alpha; 154 int fuse_corr_beta; 155 156 int16_t therm_a; 157 int16_t therm_b; 158}; 159 160struct soctherm_softc { 161 device_t dev; 162 struct resource *mem_res; 163 struct resource *irq_res; 164 void *irq_ih; 165 166 clk_t tsensor_clk; 167 clk_t soctherm_clk; 168 hwreset_t reset; 169 170 int ntsensors; 171 struct tsensor *tsensors; 172}; 173 174static struct ofw_compat_data compat_data[] = { 175 {"nvidia,tegra124-soctherm", 1}, 176 {NULL, 0}, 177}; 178 179static struct tsensor_cfg t124_tsensor_config = { 180 .tall = 16300, 181 .tsample = 120, 182 .tiddq_en = 1, 183 .ten_count = 1, 184 .pdiv = 8, 185 .tsample_ate = 480, 186 .pdiv_ate = 8 187}; 188 189 190static struct tsensor t124_tsensors[] = { 191 { 192 .name = "cpu0", 193 .id = TEGRA124_SOCTHERM_SENSOR_CPU, 194 .cfg = &t124_tsensor_config, 195 .sensor_base = 0x0c0, 196 .calib_fuse = 0x098, 197 .fuse_corr_alpha = 1135400, 198 .fuse_corr_beta = -6266900, 199 }, 200 { 201 .name = "cpu1", 202 .id = -1, 203 .cfg = &t124_tsensor_config, 204 .sensor_base = 0x0e0, 205 .calib_fuse = 0x084, 206 .fuse_corr_alpha = 1122220, 207 .fuse_corr_beta = -5700700, 208 }, 209 { 210 .name = "cpu2", 211 .id = -1, 212 .cfg = &t124_tsensor_config, 213 .sensor_base = 0x100, 214 .calib_fuse = 0x088, 215 .fuse_corr_alpha = 1127000, 216 .fuse_corr_beta = -6768200, 217 }, 218 { 219 .name = "cpu3", 220 .id = -1, 221 .cfg = &t124_tsensor_config, 222 .sensor_base = 0x120, 223 .calib_fuse = 0x12c, 224 .fuse_corr_alpha = 1110900, 225 .fuse_corr_beta = -6232000, 226 }, 227 { 228 .name = "mem0", 229 .id = TEGRA124_SOCTHERM_SENSOR_MEM, 230 .cfg = &t124_tsensor_config, 231 .sensor_base = 0x140, 232 .calib_fuse = 0x158, 233 .fuse_corr_alpha = 1122300, 234 .fuse_corr_beta = -5936400, 235 }, 236 { 237 .name = "mem1", 238 .id = -1, 239 .cfg = &t124_tsensor_config, 240 .sensor_base = 0x160, 241 .calib_fuse = 0x15c, 242 .fuse_corr_alpha = 1145700, 243 .fuse_corr_beta = -7124600, 244 }, 245 { 246 .name = "gpu", 247 .id = TEGRA124_SOCTHERM_SENSOR_GPU, 248 .cfg = &t124_tsensor_config, 249 .sensor_base = 0x180, 250 .calib_fuse = 0x154, 251 .fuse_corr_alpha = 1120100, 252 .fuse_corr_beta = -6000500, 253 }, 254 { 255 .name = "pllX", 256 .id = TEGRA124_SOCTHERM_SENSOR_PLLX, 257 .cfg = &t124_tsensor_config, 258 .sensor_base = 0x1a0, 259 .calib_fuse = 0x160, 260 .fuse_corr_alpha = 1106500, 261 .fuse_corr_beta = -6729300, 262 }, 263}; 264 265/* Extract signed integer bitfield from register */ 266static int 267extract_signed(uint32_t reg, int shift, int bits) 268{ 269 int32_t val; 270 uint32_t mask; 271 272 mask = (1 << bits) - 1; 273 val = ((reg >> shift) & mask) << (32 - bits); 274 val >>= 32 - bits; 275 return ((int32_t)val); 276} 277 278static inline int64_t div64_s64_precise(int64_t a, int64_t b) 279{ 280 int64_t r, al; 281 282 al = a << 16; 283 r = (al * 2 + 1) / (2 * b); 284 return r >> 16; 285} 286 287static void 288get_shared_cal(struct soctherm_softc *sc, struct soctherm_shared_cal *cal) 289{ 290 uint32_t val; 291 int calib_cp, calib_ft; 292 293 val = tegra_fuse_read_4(FUSE_TSENSOR8_CALIB); 294 cal->base_cp = FUSE_TSENSOR8_CALIB_CP_TS_BASE(val); 295 cal->base_ft = FUSE_TSENSOR8_CALIB_FT_TS_BASE(val); 296 297 val = tegra_fuse_read_4(FUSE_SPARE_REALIGNMENT_REG); 298 calib_ft = extract_signed(val, 299 FUSE_SPARE_REALIGNMENT_REG_SHIFT_FT_SHIFT, 300 FUSE_SPARE_REALIGNMENT_REG_SHIFT_FT_BITS); 301 calib_cp = extract_signed(val, 302 FUSE_SPARE_REALIGNMENT_REG_SHIFT_CP_SHIFT, 303 FUSE_SPARE_REALIGNMENT_REG_SHIFT_CP_BITS); 304 305 cal->actual_temp_cp = 2 * NOMINAL_CALIB_CP_T124 + calib_cp; 306 cal->actual_temp_ft = 2 * NOMINAL_CALIB_FT_T124 + calib_ft; 307#ifdef DEBUG 308 printf("%s: base_cp: %u, base_ft: %d," 309 " actual_temp_cp: %d, actual_temp_ft: %d\n", 310 __func__, cal->base_cp, cal->base_ft, 311 cal->actual_temp_cp, cal->actual_temp_ft); 312#endif 313} 314 315 316static void 317tsensor_calibration(struct tsensor *sensor, struct soctherm_shared_cal *shared) 318{ 319 uint32_t val; 320 int mult, div, calib_cp, calib_ft; 321 int actual_tsensor_ft, actual_tsensor_cp, delta_sens, delta_temp; 322 int temp_a, temp_b; 323 int64_t tmp; 324 325 val = tegra_fuse_read_4(sensor->calib_fuse); 326 calib_cp = extract_signed(val, 327 FUSE_TSENSOR_CALIB_CP_TS_BASE_SHIFT, 328 FUSE_TSENSOR_CALIB_CP_TS_BASE_BITS); 329 actual_tsensor_cp = shared->base_cp * 64 + calib_cp; 330 331 calib_ft = extract_signed(val, 332 FUSE_TSENSOR_CALIB_FT_TS_BASE_SHIFT, 333 FUSE_TSENSOR_CALIB_FT_TS_BASE_BITS); 334 actual_tsensor_ft = shared->base_ft * 32 + calib_ft; 335 336 delta_sens = actual_tsensor_ft - actual_tsensor_cp; 337 delta_temp = shared->actual_temp_ft - shared->actual_temp_cp; 338 mult = sensor->cfg->pdiv * sensor->cfg->tsample_ate; 339 div = sensor->cfg->tsample * sensor->cfg->pdiv_ate; 340 341 342 temp_a = div64_s64_precise((int64_t) delta_temp * (1LL << 13) * mult, 343 (int64_t) delta_sens * div); 344 345 tmp = (int64_t)actual_tsensor_ft * shared->actual_temp_cp - 346 (int64_t)actual_tsensor_cp * shared->actual_temp_ft; 347 temp_b = div64_s64_precise(tmp, (int64_t)delta_sens); 348 349 temp_a = div64_s64_precise((int64_t)temp_a * sensor->fuse_corr_alpha, 350 1000000); 351 temp_b = div64_s64_precise((int64_t)temp_b * sensor->fuse_corr_alpha + 352 sensor->fuse_corr_beta, 1000000); 353 sensor->therm_a = (int16_t)temp_a; 354 sensor->therm_b = (int16_t)temp_b; 355#ifdef DEBUG 356 printf("%s: sensor %s fuse: 0x%08X (0x%04X, 0x%04X)" 357 " calib_cp: %d(0x%04X), calib_ft: %d(0x%04X)\n", 358 __func__, sensor->name, val, val & 0x1FFF, (val >> 13) & 0x1FFF, 359 calib_cp, calib_cp, calib_ft, calib_ft); 360 printf("therma: 0x%04X(%d), thermb: 0x%04X(%d)\n", 361 (uint16_t)sensor->therm_a, temp_a, 362 (uint16_t)sensor->therm_b, sensor->therm_b); 363#endif 364} 365 366static void 367soctherm_init_tsensor(struct soctherm_softc *sc, struct tsensor *sensor, 368 struct soctherm_shared_cal *shared_cal) 369{ 370 uint32_t val; 371 372 tsensor_calibration(sensor, shared_cal); 373 374 val = RD4(sc, sensor->sensor_base + TSENSOR_CONFIG0); 375 val |= TSENSOR_CONFIG0_STOP; 376 val |= TSENSOR_CONFIG0_STATUS_CLR; 377 WR4(sc, sensor->sensor_base + TSENSOR_CONFIG0, val); 378 379 val = TSENSOR_CONFIG0_TALL(sensor->cfg->tall); 380 val |= TSENSOR_CONFIG0_STOP; 381 WR4(sc, sensor->sensor_base + TSENSOR_CONFIG0, val); 382 383 val = TSENSOR_CONFIG1_TSAMPLE(sensor->cfg->tsample - 1); 384 val |= TSENSOR_CONFIG1_TIDDQ_EN(sensor->cfg->tiddq_en); 385 val |= TSENSOR_CONFIG1_TEN_COUNT(sensor->cfg->ten_count); 386 val |= TSENSOR_CONFIG1_TEMP_ENABLE; 387 WR4(sc, sensor->sensor_base + TSENSOR_CONFIG1, val); 388 389 val = TSENSOR_CONFIG2_THERMA((uint16_t)sensor->therm_a) | 390 TSENSOR_CONFIG2_THERMB((uint16_t)sensor->therm_b); 391 WR4(sc, sensor->sensor_base + TSENSOR_CONFIG2, val); 392 393 val = RD4(sc, sensor->sensor_base + TSENSOR_CONFIG0); 394 val &= ~TSENSOR_CONFIG0_STOP; 395 WR4(sc, sensor->sensor_base + TSENSOR_CONFIG0, val); 396#ifdef DEBUG 397 printf(" Sensor: %s cfg:0x%08X, 0x%08X, 0x%08X," 398 " sts:0x%08X, 0x%08X, 0x%08X\n", sensor->name, 399 RD4(sc, sensor->sensor_base + TSENSOR_CONFIG0), 400 RD4(sc, sensor->sensor_base + TSENSOR_CONFIG1), 401 RD4(sc, sensor->sensor_base + TSENSOR_CONFIG2), 402 RD4(sc, sensor->sensor_base + TSENSOR_STATUS0), 403 RD4(sc, sensor->sensor_base + TSENSOR_STATUS1), 404 RD4(sc, sensor->sensor_base + TSENSOR_STATUS2) 405 ); 406#endif 407} 408 409static int 410soctherm_convert_raw(uint32_t val) 411{ 412 int32_t t; 413 414 t = ((val & READBACK_VALUE_MASK) >> READBACK_VALUE_SHIFT) * 1000; 415 if (val & READBACK_ADD_HALF) 416 t += 500; 417 if (val & READBACK_NEGATE) 418 t *= -1; 419 420 return t; 421} 422 423static int 424soctherm_read_temp(struct soctherm_softc *sc, struct tsensor *sensor, int *temp) 425{ 426 int timeout; 427 uint32_t val; 428 429 430 /* wait for valid sample */ 431 for (timeout = 1000; timeout > 0; timeout--) { 432 val = RD4(sc, sensor->sensor_base + TSENSOR_STATUS1); 433 if ((val & TSENSOR_STATUS1_TEMP_VALID) != 0) 434 break; 435 DELAY(100); 436 } 437 if (timeout <= 0) 438 device_printf(sc->dev, "Sensor %s timeouted\n", sensor->name); 439 *temp = soctherm_convert_raw(val); 440#ifdef DEBUG 441 printf("%s: Raw: 0x%08X, temp: %d\n", __func__, val, *temp); 442 printf(" Sensor: %s cfg:0x%08X, 0x%08X, 0x%08X," 443 " sts:0x%08X, 0x%08X, 0x%08X\n", sensor->name, 444 RD4(sc, sensor->sensor_base + TSENSOR_CONFIG0), 445 RD4(sc, sensor->sensor_base + TSENSOR_CONFIG1), 446 RD4(sc, sensor->sensor_base + TSENSOR_CONFIG2), 447 RD4(sc, sensor->sensor_base + TSENSOR_STATUS0), 448 RD4(sc, sensor->sensor_base + TSENSOR_STATUS1), 449 RD4(sc, sensor->sensor_base + TSENSOR_STATUS2) 450 ); 451#endif 452 return 0; 453} 454 455static int 456soctherm_get_temp(device_t dev, device_t cdev, uintptr_t id, int *val) 457{ 458 struct soctherm_softc *sc; 459 int i; 460 461 sc = device_get_softc(dev); 462 /* The direct sensor map starts at 0x100 */ 463 if (id >= 0x100) { 464 id -= 0x100; 465 if (id >= sc->ntsensors) 466 return (ERANGE); 467 return(soctherm_read_temp(sc, sc->tsensors + id, val)); 468 } 469 /* Linux (DT) compatible thermal zones */ 470 for (i = 0; i < sc->ntsensors; i++) { 471 if (sc->tsensors->id == id) 472 return(soctherm_read_temp(sc, sc->tsensors + id, val)); 473 } 474 return (ERANGE); 475} 476 477static int 478soctherm_sysctl_temperature(SYSCTL_HANDLER_ARGS) 479{ 480 struct soctherm_softc *sc; 481 int val; 482 int rv; 483 int id; 484 485 /* Write request */ 486 if (req->newptr != NULL) 487 return (EINVAL); 488 489 sc = arg1; 490 id = arg2; 491 492 if (id >= sc->ntsensors) 493 return (ERANGE); 494 rv = soctherm_read_temp(sc, sc->tsensors + id, &val); 495 if (rv != 0) 496 return (rv); 497 498 val = val / 100; 499 val += 2731; 500 rv = sysctl_handle_int(oidp, &val, 0, req); 501 return (rv); 502} 503 504static int 505soctherm_init_sysctl(struct soctherm_softc *sc) 506{ 507 int i; 508 struct sysctl_oid *oid, *tmp; 509 510 sysctl_ctx_init(&soctherm_sysctl_ctx); 511 /* create node for hw.temp */ 512 oid = SYSCTL_ADD_NODE(&soctherm_sysctl_ctx, 513 SYSCTL_STATIC_CHILDREN(_hw), OID_AUTO, "temperature", 514 CTLFLAG_RD, NULL, ""); 515 if (oid == NULL) 516 return (ENXIO); 517 518 /* Add sensors */ 519 for (i = sc->ntsensors - 1; i >= 0; i--) { 520 tmp = SYSCTL_ADD_PROC(&soctherm_sysctl_ctx, 521 SYSCTL_CHILDREN(oid), OID_AUTO, sc->tsensors[i].name, 522 CTLTYPE_INT | CTLFLAG_RD, sc, i, 523 soctherm_sysctl_temperature, "IK", "SoC Temperature"); 524 if (tmp == NULL) 525 return (ENXIO); 526 } 527 528 return (0); 529} 530 531static int 532soctherm_probe(device_t dev) 533{ 534 535 if (!ofw_bus_status_okay(dev)) 536 return (ENXIO); 537 538 if (ofw_bus_search_compatible(dev, compat_data)->ocd_data == 0) 539 return (ENXIO); 540 541 device_set_desc(dev, "Tegra temperature sensors"); 542 return (BUS_PROBE_DEFAULT); 543} 544 545static int 546soctherm_attach(device_t dev) 547{ 548 struct soctherm_softc *sc; 549 phandle_t node; 550 int i, rid, rv; 551 struct soctherm_shared_cal shared_calib; 552 553 sc = device_get_softc(dev); 554 sc->dev = dev; 555 node = ofw_bus_get_node(sc->dev); 556 557 rid = 0; 558 sc->mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, 559 RF_ACTIVE); 560 if (sc->mem_res == NULL) { 561 device_printf(dev, "Cannot allocate memory resources\n"); 562 goto fail; 563 } 564 565 rid = 0; 566 sc->irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE); 567 if (sc->irq_res == NULL) { 568 device_printf(dev, "Cannot allocate IRQ resources\n"); 569 goto fail; 570 } 571 572/* 573 if ((bus_setup_intr(dev, sc->irq_res, INTR_TYPE_MISC, 574 soctherm_intr, NULL, sc, &sc->irq_ih))) { 575 device_printf(dev, 576 "WARNING: unable to register interrupt handler\n"); 577 goto fail; 578 } 579*/ 580 581 /* OWF resources */ 582 rv = hwreset_get_by_ofw_name(dev, 0, "soctherm", &sc->reset); 583 if (rv != 0) { 584 device_printf(dev, "Cannot get fuse reset\n"); 585 goto fail; 586 } 587 rv = clk_get_by_ofw_name(dev, 0, "tsensor", &sc->tsensor_clk); 588 if (rv != 0) { 589 device_printf(dev, "Cannot get 'tsensor' clock: %d\n", rv); 590 goto fail; 591 } 592 rv = clk_get_by_ofw_name(dev, 0, "soctherm", &sc->soctherm_clk); 593 if (rv != 0) { 594 device_printf(dev, "Cannot get 'soctherm' clock: %d\n", rv); 595 goto fail; 596 } 597 598 rv = hwreset_assert(sc->reset); 599 if (rv != 0) { 600 device_printf(dev, "Cannot assert reset\n"); 601 goto fail; 602 } 603 rv = clk_enable(sc->tsensor_clk); 604 if (rv != 0) { 605 device_printf(dev, "Cannot enable 'tsensor' clock: %d\n", rv); 606 goto fail; 607 } 608 rv = clk_enable(sc->soctherm_clk); 609 if (rv != 0) { 610 device_printf(dev, "Cannot enable 'soctherm' clock: %d\n", rv); 611 goto fail; 612 } 613 rv = hwreset_deassert(sc->reset); 614 if (rv != 0) { 615 device_printf(dev, "Cannot clear reset\n"); 616 goto fail; 617 } 618 619 /* Tegra 124 */ 620 sc->tsensors = t124_tsensors; 621 sc->ntsensors = nitems(t124_tsensors); 622 get_shared_cal(sc, &shared_calib); 623 624 WR4(sc, TSENSOR_PDIV, TSENSOR_PDIV_T124); 625 WR4(sc, TSENSOR_HOTSPOT_OFF, TSENSOR_HOTSPOT_OFF_T124); 626 627 for (i = 0; i < sc->ntsensors; i++) 628 soctherm_init_tsensor(sc, sc->tsensors + i, &shared_calib); 629 630 rv = soctherm_init_sysctl(sc); 631 if (rv != 0) { 632 device_printf(sc->dev, "Cannot initialize sysctls\n"); 633 goto fail; 634 } 635 636 OF_device_register_xref(OF_xref_from_node(node), dev); 637 return (bus_generic_attach(dev)); 638 639fail: 640 if (sc->irq_ih != NULL) 641 bus_teardown_intr(dev, sc->irq_res, sc->irq_ih); 642 sysctl_ctx_free(&soctherm_sysctl_ctx); 643 if (sc->tsensor_clk != NULL) 644 clk_release(sc->tsensor_clk); 645 if (sc->soctherm_clk != NULL) 646 clk_release(sc->soctherm_clk); 647 if (sc->reset != NULL) 648 hwreset_release(sc->reset); 649 if (sc->irq_res != NULL) 650 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->irq_res); 651 if (sc->mem_res != NULL) 652 bus_release_resource(dev, SYS_RES_MEMORY, 0, sc->mem_res); 653 654 return (ENXIO); 655} 656 657static int 658soctherm_detach(device_t dev) 659{ 660 struct soctherm_softc *sc; 661 sc = device_get_softc(dev); 662 663 if (sc->irq_ih != NULL) 664 bus_teardown_intr(dev, sc->irq_res, sc->irq_ih); 665 sysctl_ctx_free(&soctherm_sysctl_ctx); 666 if (sc->tsensor_clk != NULL) 667 clk_release(sc->tsensor_clk); 668 if (sc->soctherm_clk != NULL) 669 clk_release(sc->soctherm_clk); 670 if (sc->reset != NULL) 671 hwreset_release(sc->reset); 672 if (sc->irq_res != NULL) 673 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->irq_res); 674 if (sc->mem_res != NULL) 675 bus_release_resource(dev, SYS_RES_MEMORY, 0, sc->mem_res); 676 677 return (ENXIO); 678} 679 680static device_method_t tegra_soctherm_methods[] = { 681 /* Device interface */ 682 DEVMETHOD(device_probe, soctherm_probe), 683 DEVMETHOD(device_attach, soctherm_attach), 684 DEVMETHOD(device_detach, soctherm_detach), 685 686 /* SOCTHERM interface */ 687 DEVMETHOD(tegra_soctherm_get_temperature, soctherm_get_temp), 688 689 DEVMETHOD_END 690}; 691 692static devclass_t tegra_soctherm_devclass; 693static DEFINE_CLASS_0(soctherm, tegra_soctherm_driver, tegra_soctherm_methods, 694 sizeof(struct soctherm_softc)); 695EARLY_DRIVER_MODULE(tegra_soctherm, simplebus, tegra_soctherm_driver, 696 tegra_soctherm_devclass, NULL, NULL, 79); 697